Change message when no favorites

[chevdor]

8<------------------------ FEATURE REQUEST ------------------------------------

Missing feature

Instead of the message telling the user he has no favorite, give a hint on HOW to add favorites.

Justification

While not very complex to figure out, this was not obvious to me at first and I was looking for a way to add favorites from the device itself. A message like "Use the app to add favorites" would have put me on track.

Motivation

wonder longer :)

8<------------------------ END FEATURE REQUEST --------------------------------